3．As with any house guests，indoor plants require a certain amount of basic，regular attention if they are going to feel at home．The first consideration when purchasing plants is to make reasonably sure that they are suitable for the condition in which they are going to be housed．
     A general rule for most plants being brought indoors for the first time is to ensure that they have reasonable temperature of not less than 60 degrees Fahrenheit，a position out of cold air，safe from pets and not exposed to strong sunlight．
     Plants love company．When plants are growing together，they create an atmosphere of damp around themselves which is far more beneficial than hot dry conditions．A group of plants will also present a more pleasing picture and provide an opportunity for a creative arrangement．There is no secret to this．Just rely on your natural feeling for harmony．
     Watering and feeding plants are probably the two areas of care that are the least well understood，but，again，if you follow a few simple rules，your plants should do well．Cold slightly warm water is therefore the answer．It is usually better to pour water on to the soil on the surface of the pot rather than put the water into the pot holder at the bottom．Avoid giving small amount of water at regular intervals-it is much better to wet the soil right through the pot in one go and then to allow it to dry noticeably before giving it a further watering．
The majority of indoor plants will be in active growth from March until October，and during this time，the established ones will benefit from regular feeding．This may mean feeding with a weak liquid fertilizer（肥料） at each watering or at intervals of a week or ten days with fertilizer at a standard strength．It is important，however，to ensure that plants are not fed when growth is inactive，when the soil in the pot is dry，or too soon after the plants has been potted up．
28．In Paragraph 2，the author mainly tells us toD．
A．buy plants that help clean indoor air         
B．create a new environment with plants
C．put plants on the sunny side of the room      
D．make sure of suitable conditions for plants
29．What's the benefit of plants growing together？C
A．It provides owners good company．
B．It makes it convenient to look after them．
C．It helps the air around them slightly wet．
D．It allows owners to draw a pleasant picture．
30．While watering the plants，what should we remember to do？A
A．Use water that is a little warm．
B．Pour the water into the pot holder．
C．Give small amount of water at one time．
D．Consider further watering in wet weather．
31．What is the best time to feed the plants？C
A．When the soil is dry．
B．When the temperature is high．
C．When their growth is active．
D．When they have just been planted．

分析 本文是一篇科教類閱讀，文章主要講述了如何種植植物，并且介紹了室內(nèi)種植要控制好適宜的溫度，和植物在一起種植的好處以及如何喂養(yǎng)等問題．

解答 DCAC
28．D細(xì)節(jié)理解題．根據(jù)第二段A general rule for most plants being brought indoors for the first time is to ensure that they have reasonable temperature of not less than 60 degrees Fahrenhei，可知這段主要講述在室內(nèi)的植株要注意控制好適宜的溫度，給植物一個(gè)良好的室內(nèi)條件．故選D．
29．C細(xì)節(jié)理解題．根據(jù)第三段When plants are growing together，they create an atmosphere of damp around themselves which is far more beneficial than hot dry conditions，可知植物在一起生長(zhǎng)有利于適應(yīng)干熱的環(huán)境，說明植物在一起生長(zhǎng)可以讓周圍的空氣變潮濕．故選C．
30．A細(xì)節(jié)理解題．根據(jù)第四段Cold slightly warm water is therefore the answer，說明冷溫的水澆灌植物比較好，故選A．
31．C細(xì)節(jié)理解題．根據(jù)最后一段It is important，however，to ensure that plants are not fed when growth is inactive，可反推過來，植物在它們生長(zhǎng)旺盛的期間，就是給它們澆灌施肥的最好時(shí)機(jī)．故選C．

點(diǎn)評(píng) 本文考察學(xué)生的理解推斷能力以及細(xì)心程度，只要抓住文章的關(guān)鍵詞，采用尋讀的方法查找細(xì)節(jié)，就能找到正確答案．

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